Study of charge symmetry in sup 4 He by simultaneous sup 4 He( e , e prime p ) sup 3 H and sup 4 He( e , e prime n ) sup 3 He measurements

Journal Article · Mon Oct 09 00:00:00 EDT 1989 · Physical Review Letters; (USA)

DOI:https://doi.org/10.1103/PhysRevLett.63.1574· OSTI ID:5248541

Spahn, M; Kihm, T; Knopfle, K T ^[1]; Friedrich, J; Voegler, N; Schmitt, C; Walther, V H ^[2]; Unkelbach, M; Hofmann, H M ^[3]

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1. Max-Planck-Institut fuer Kernphysik, D-6900 Heidelberg, Germany (DE)
2. Institut fuer Kernphysik, Universitaet Mainz, D-6500 Mainz, Germany
3. Institut fuer Theoretische Physik, Universitaet Erlangen, D-8520 Erlangen, Germany

We have measured the ({sup 3}H+{ital p}) and ({sup 3}He+{ital n}) breakup of {sup 4}He by {sup 4}He({ital e},{ital e}{prime}{ital c}) coincidence experiments at low momentum transfer ({ital q}{approx}0.39 fm{sup {minus}1}) in the excitation energy region 22{le}{ital E}{sub {ital x}}{le}36 MeV. Both channels were studied simultaneously by detecting the charged fragments {ital c}={ital p}, {sup 3}H, and {sup 3}He in the same detector system. The measured {sup 4}He({ital e},{ital e}{prime}{ital p}){sup 3}H and {sup 4}He({ital e},{ital e}{prime}{ital n}){sup 3}He angular correlations as well as the deduced total {sup 4}He({ital e},{ital e}{prime}{ital p}){sup 3}H and {sup 4}He({ital e},{ital e}{prime}{ital n}){sup 3}He cross sections are reproduced by microscopic model calculations with a charge-symmetric nuclear Hamiltonian.

• OSTI ID: 5248541
• Journal Information: Physical Review Letters; (USA), Vol. 63:15; ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
C INVARIANCE
ELECTRON REACTIONS
BREAKUP REACTIONS
HELIUM 4 TARGET
ANGULAR DISTRIBUTION
BORN APPROXIMATION
CALIBRATION
CHARGE INDEPENDENCE
COINCIDENCE METHODS
COULOMB FIELD
ENERGY-LEVEL TRANSITIONS
EXPERIMENTAL DATA
ISOSPIN
MAGNETIC SPECTROMETERS
MEV RANGE 10-100
MONTE CARLO METHOD
PARTICLE KINEMATICS
SCATTERING LENGTHS
TOTAL CROSS SECTIONS
CHARGED-PARTICLE REACTIONS
COUNTING TECHNIQUES
CROSS SECTIONS
DATA
DIMENSIONS
DISTRIBUTION
ELECTRIC FIELDS
ENERGY RANGE
INFORMATION
INVARIANCE PRINCIPLES
LENGTH
LEPTON REACTIONS
MEASURING INSTRUMENTS
MEV RANGE
NUCLEAR REACTIONS
NUMERICAL DATA
PARTICLE PROPERTIES
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651220* - Nuclear Properties & Reactions
A=1-5
Experimental